APA (7th ed.) Citation

Merrill, E. D., & Freeman, F. L. (1940). The old world species of the celastraceous genus Microtropis Wallich. Acad.

Chicago Style (17th ed.) Citation

Merrill, Elmer Drew, and F. L. Freeman. The Old World Species of the Celastraceous Genus Microtropis Wallich. Boston: Acad, 1940.

MLA (9th ed.) Citation

Merrill, Elmer Drew, and F. L. Freeman. The Old World Species of the Celastraceous Genus Microtropis Wallich. Acad, 1940.